Description
DS18 i48DSP
The DS18 i48DSP is a professional-grade digital sound processor designed to deliver precise control and superior sound tuning for advanced car audio systems. Featuring 4 input channels and 8 output channels, this DSP allows detailed adjustment of crossovers, equalization, time alignment, and output levels to perfectly balance multi-speaker and multi-amplifier setups. With built-in Bluetooth connectivity, the i48DSP enables wireless audio streaming and convenient system tuning through compatible mobile apps or PC software. Its high-quality digital processing ensures clean signal transmission with low noise and distortion, while the compact, installer-friendly design makes it easy to integrate into a wide range of vehicles. Ideal for enthusiasts and professionals alike, the DS18 i48DSP provides complete flexibility and control for achieving high-fidelity, competition-level car audio performance.
Specifications
| Feature | Specification |
|---|---|
| Operating Voltage | 9.5 – 15 V |
| Power Consumption | 300 mA |
| Recommended Fuse Rating | 1 A |
| Power Input Terminal Size | 16 Ga |
| LED Indicator | Power / BT / Clip / Limiter |
| Voltmeter | Yes (via App) |
| Remote Turn-on (Input) | Yes |
| RCA Connector Type | Tiffany |
| Housing Material | Aluminum |
| Body Color / Finish | Black / Silver Brushed |
| Compact Size for Easy Installation | Yes |
| PCB Anti-Corrosion Coating | Yes |
| Surface Mount Component Technology | Yes |
| Smartphone App Connectivity | Yes (Android & iOS) |
| Settings Presets | Yes (6 presets stored locally) |
Audio Specifications
| Specification | Value |
|---|---|
| Frequency Response | 20 Hz – 20 kHz |
| Signal-to-Noise Ratio | 101 dB |
| Total Harmonic Distortion (THD) | 0.04% |
| Input Sensitivity (Low-Level) | 200 mV – 6 V |
| Maximum Output Voltage | Up to 3.3 V |
| Balanced Input Noise Rejection | 94 dB |
| Stereo Separation | 93 dB |
| Time Alignment | 0 – 20 ms |
| DSP Chip | AKM AK7735 |
| Sampling Rate | 96 kHz / 32-bit |
| Signal Conversion (AD/DA) | CS4344 |
| Bluetooth Audio Receiver | v5.3 |
| Bluetooth Audio Codec | SBC / AAC |
| Noise Gate | Yes, adjustable (−60 to −120 dB) |
| Routing Channels | Yes, adjustable with mixing |
Equalizer Section
| Parameter | Specification |
|---|---|
| Equalizer Type | Parametric (per channel) / Graphic (general) |
| Number of Bands | 31 (per channel & general) |
| Frequency Point | Selectable (per channel) |
| Boost / Cut Range | ±18 dB |
| Q Factor | 0.3 – 15 (per channel) |
Crossover Section
| Parameter | Specification |
|---|---|
| Crossover Ways | 8 (per channel) |
| Crossover Slopes | Butterworth 6–48 dB/Oct Bessel 12–48 dB/Oct Linkwitz 12–48 dB/Oct |
| Frequency Cut-off | Selectable 20 Hz – 20 kHz (HPF / LPF / Band-Pass) |
| Phase (Polarity) | 0° / 180° selectable (per channel) |
Limiter Section
| Parameter | Specification |
|---|---|
| Channels | 8 (per channel) |
| Threshold | −6 to −60 dB |
| Attack | 0 – 200 ms |
| Release | 0 – 990 ms |
| Auto Mode | Yes (Attack & Release) |
Measurements
| Measurement | Value |
|---|---|
| Overall Length | 5.3 in (135 mm) |
| Overall Width | 3.25 in (83 mm) |
| Overall Height | 1.3 in (34 mm) |
Product Overview
4-Input / 8-Output Digital Sound Processor with Bluetooth and App Control
DS18’s i48DSP gives you total command over your sound system! With 4 RCA inputs and 8 fully configurable RCA outputs, this DSP (digital sound processor) lets you build and fine-tune your audio experience across any setup.
Bluetooth App Control
Set crossover points, time alignment, limiter, and EQ right from your phone. Integrated with Bluetooth Version 5.1, the i48DSP lets you make live tuning adjustments wirelessly using DS18’s iDSP app (iOS and Android).
High-Performance Audio Tuning
Equipped with a 96kHz/32-bit sampling rate DSP chip (AK7735) and CS4344 signal conversion, the i48DSP gives you pinpoint audio control. It features a 31-band parametric EQ on each channel, routing with mixing, bandpass filtering, limiter per output, and a built-in noise gate: all with impressively low distortion (0.04% THD).
Clean Signal, Low Noise
With an output of up to 3.3V and a 101dB signal-to-noise ratio, the i48DSP ensures ultra-clean sound with minimal interference. It also includes clip and limiter LEDs to prevent distortion and protect your equipment during high-output sessions.
Built to Fit Anywhere
This compact DSP is housed in a brushed aluminum body with surface-mount technology and anti-corrosion PCB coating. Designed to work with all systems, the i48DSP installs easily into a variety of vehicles and integrates seamlessly with aftermarket or OEM systems.
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